Elevator.



No. 733,864. PATBNTED JULY 14, 1903; J. s. MUGKLE.

ELEVATOR. APPLICATION FILED MAY 20, 1903.

K0 MODEL.

2 SHEETS-#83331 L haw MJ%W( PATENTED JULY 14, 1903. J. s. MUGKLE.

ELEVATOR.

APPLICATION FILED m 20, 1903.

SHEET 2.

2 snsms- NO MODEL.

THE uomzls Pzrzns co. morouma, wnsumuvou, u. c.

vvator-car, illustrating my invention.

NITED STATES Patented July 14, 1903.

[PATENT OFFICE.

JOHN S. MUOKLE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO STANDARDELEVATOR INTERLOOK COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATIONOF PENNSYLVANIA E LEVATO R.

$PECIFIGATION forming part of Letters Patent No. 733,864, dated July 14,1903.

Application filed May 20, 1903.

To all whom it may concern:

Be it known that I, JOHN S. MUCKLE, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Elevators, of which the following is a specification.

The object of my invention is to provide a simpleand effective lockingdevice for locking the car to a landing .when the elevatorcar comes to afull stop, and at the same time to release the landing-door, so as toallow it to open when the car is at the landing. This object I attain inthe following manner, reference beng had to the accompanying drawings,in which Figure lis a sectional view through the ele- Fig. 2 is asectional plan view. Fig. 3 is a sectional view on the line 3 3, Fig. l;and Fig. 4 is a detached perspective view of a portion of thesegment-frame.

A is the platform'of an elevator-car;

a is the doorway.

B is a landing having a doorway b.

D is a door suitably hung to guides at the landing and arranged to slidein the present instance so as to be opened and closed. Automatic meansmay be provided for opening the door when it is released, the door beingclosed by the operator on the car and held closed by a suitable catch(I, only accessible from the elevator-well. The catch is actuated by aplunger E on the car. This plunger is so formed that a lock 0, pivotedin the present instance to the elevator-well, engages the plunger whenit is forced out to release the door, so that it cannot be retracteduntil the door is again closed. This mechanism is fully illustrated andclaimed in a patent granted to John S. Muckl and W. H. B. Teanier, No.555,825, dated March 3,1896. The object of my present invention is toattach this mechanism to a lever-controller such as illustrated in thedrawings.

F isIa lever secured to a shaft f, mounted in a bracket G,'"'secured tothe under side of the car in the present instance.

H is a frame mounted on the floor of the Serial No. 15 7,975. (Nomodel.)

' car, and on this frame is a segment 71, having a central opening it.

Carried by thelever F is an operating-rod I, also pivoted to the shaftin the present instance. This operating-rodslides in a blockf on thelever F and carries a handholdf'. A spring '6 is mounted on a rod 1'',which extends through said block from the handhold f and tends tokeepthe handhold in the elevated position. On the rod I is an adjustable block '6 This block is cut away at the back to allow it to passinto the ventral opening it in the segment h, so that on the depressionof the handhold f by the operator when the lever F is in the centralposition the block 1? will enter the openingin the segment, and thuslock the lever from any movement on its pivot until the handhold israised.

In order to lockthe handhold'in its depressed position, so'as to lockthe lever when the landing-door is open, I connect the plunger E to thesaid operating-rod I bya series of rods and levers, so that when-thesaidplunger E is engaged by the locking mechanism 0 at the landing it willprevent any vertical movement of the-rod I and the handhold, and thelever will remain locked-until the door is closed by the operator.

In the present instance I have shown a rock-shaft J, pivoted to abracketj on the under side of the car, and on one end of this rock-shaftis a segment-ally-slotted arm j, which is engaged by a pin 2' on the rodI. By making the slot in the form of a segment the lever F can be movedon its pivot without affooting the movement of the rock-shaft J. On theend of the rock-shaft opposite to the arm J is an arm 7' connected 'by arod is to a leon the under side of the car. The other arm of this-leverK is connected by a rod L, which is secured to the plunger E. Thisplunger has aslide-plate e,'whi'ch is mounted in a grooved plate e,secured to the bottom of the car, so that when the mechanism 'abovedescribed is operated the plunger will slide to- Ward and from the wallsof the elevator-well. The plunger has a flange e at the outr end,

ver K, hung on the pivot 7t from a bracket I0 as in the patent abovementioned, with which the locking mechanism engages.

I claim as my invention- 1. The combination in locking mechanism forelevators, of a car, a landing, a door at the landing, means for lockingthe door in its closed position, a pivoted lever on the car forcontrolling the movement of said car, a segment, a vertically-movablerod carried by the said lever and arranged to engage the segment wherebythe lever can be locked in its central position, a plunger carried bythe car and connected to the said locking mechanism, a lock at thelanding, said parts being so arranged that when the locking mechanism ofthe lever is operated, the plunger will release the door and will belocked in turnby the locking mechanism at the landing until the door isagain closed, substantially as described.

2. The combination of a car, a landing, a

door at the landing, means for locking the door in its closed position,an operating-lever mechanism at the landing for locking the plunger,substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN S. MUCKLE.

Witnesses:

WILL. A. BARR, Jos. H. KLEIN.

